title: Reflected wave of finite circulation from magnetic photonic crystals.
abstract: We study the reflection of electromagnetic waves from a two-dimensional magnetic photonic crystal consisting of a periodic array of magnetic cylinders. At some frequencies the reflected wave is found to exhibit a strong circulation in that, locally, the angular momenta of the components are all of the same sign. As a result of this finite circulation, beams incident from different directions exhibit a dramatic change in their reflected waves. This effect can be used to build subwavelength one way waveguides, nearly perfect beam benders and splitters.
authors.affiliation: Bartol Research Institute, University of Delaware, Newark, DE 19716, USA.
authors.forename: S T
authors.initials: ST
authors.lastname: Chui
authors.forename: Shiyang
authors.initials: S
authors.lastname: Liu
authors.forename: Zhifang
authors.initials: Z
authors.lastname: Lin